======================================
| [    9.390643][  T170] softirqs last disabled at (23547): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.390646][  T170] Preemption disabled at:
| [    9.390647][  T170] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.390656][  T170] Tainted: [W]=WARN
[    9.390657][  T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.390658][  T170] Call Trace:
[    9.390660][  T170]  <TASK>
[    9.390661][  T170]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.390667][  T170]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.390669][  T170]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.390674][  T170]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.390677][  T170]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.390682][  T170]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[    9.390684][  T170]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.390689][  T170]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    9.390692][  T170]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.390695][  T170]  put_chars (drivers/char/virtio_console.c:1176)
[    9.390697][  T170]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.390700][  T170]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.390705][  T170]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.390712][  T170]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.390714][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.390718][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.390721][  T170]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.390725][  T170]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.390729][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.390731][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.390735][  T170]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.390739][  T170]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.390740][  T170]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.390745][  T170]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.390748][  T170]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.390749][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.390751][  T170]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.390754][  T170]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.390756][  T170]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.390759][  T170]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.390763][  T170]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.390764][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.390768][  T170]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.390769][  T170]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    9.390774][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    9.390778][  T170]  _printk (kernel/printk/printk.c:2504)
[    9.390782][  T170]  ? snapshot_read.cold (user.c:?)
[    9.390785][  T170]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    9.390788][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    9.390792][  T170]  ? configfs_register_subsystem (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:1383 fs/configfs/dir.c:173 fs/configfs/dir.c:171 fs/configfs/dir.c:1929)
[    9.390796][  T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    9.390800][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    9.390806][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    9.390809][  T170]  do_one_initcall (init/main.c:1357)
[    9.390813][  T170]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.390818][  T170]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.390821][  T170]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.390827][  T170]  do_init_module (kernel/module/main.c:3117)
[    9.390830][  T170]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.390834][  T170]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.390837][  T170]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.390841][  T170]  load_module (kernel/module/main.c:3593)
[    9.390847][  T170]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.390851][  T170]  ? __ia32_sys_fsconfig (??:?)
[    9.390854][  T170]  ? ovl_real_file (fs/overlayfs/file.c:195)
[    9.390858][  T170]  ? backing_file_read_iter (fs/backing-file.c:211)
[    9.390862][  T170]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.390866][  T170]  init_module_from_file (kernel/module/main.c:3790)
[    9.390869][  T170]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    9.390876][  T170]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.390880][  T170]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    9.390882][  T170]  idempotent_init_module (kernel/module/main.c:3802)
[    9.390886][  T170]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.390894][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.390896][  T170]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.390902][  T170]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.390904][  T170]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.390908][  T170]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.390910][  T170]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.390913][  T170]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.390915][  T170] RIP: 0033:0x7f33437a537d
[    9.390918][  T170] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	90                   	nop
   d:	f3 0f 1e fa          	endbr64
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa85
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa5b
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[    9.390920][  T170] RSP: 002b:00007ffda0734268 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.390923][  T170] RAX: ffffffffffffffda RBX: 0000556625e28700 RCX: 00007f33437a537d
[    9.390925][  T170] RDX: 0000000000000000 RSI: 00005565fca22ffd RDI: 0000000000000005
[    9.390925][  T170] RBP: 00007ffda0734300 R08: 0000000000000000 R09: 0000000000000000
[    9.390926][  T170] R10: 0000000000000000 R11: 0000000000000246 R12: 00005565fca22ffd
[    9.390927][  T170] R13: 0000556625e28810 R14: 0000000000040000 R15: 0000000000000000
| [   10.491858][  T158] softirqs last disabled at (137903): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.491861][  T158] Preemption disabled at:
| [   10.491861][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.491871][  T158] Tainted: [W]=WARN
[   10.491873][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.491875][  T158] Call Trace:
[   10.491877][  T158]  <TASK>
[   10.491879][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.491885][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.491887][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.491895][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.491899][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.491904][  T158]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   10.491906][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.491912][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.491915][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.491918][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   10.491921][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.491925][  T158]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   10.491930][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.491932][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.491934][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.491938][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.491942][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.491945][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.491949][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.491953][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.491958][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.491960][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.491964][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.491968][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.491970][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.491975][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.491978][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.491980][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.491982][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.491986][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.491987][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.491991][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.491995][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.492001][  T158]  _printk (kernel/printk/printk.c:2504)
[   10.492005][  T158]  ? snapshot_read.cold (user.c:?)
[   10.492006][  T158]  ? preempt_schedule_common (kernel/sched/core.c:7449)
[   10.492010][  T158]  ? preempt_schedule_thunk (arch/x86/entry/thunk.S:12)
[   10.492018][  T158]  register_console (kernel/printk/printk.c:4212 (discriminator 7))
[   10.492021][  T158]  ? get_init_console_seq.constprop.0.isra.0 (kernel/printk/printk.c:4018)
[   10.492024][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.492029][  T158] enabled_store (drivers/net/netconsole.c:1039) netconsole
[   10.492035][  T158]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   10.492039][  T158]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   10.492041][  T158]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   10.492044][  T158]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:253 mm/slub.c:4683 mm/slub.c:4996 mm/slub.c:5559)
[   10.492046][  T158]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   10.492050][  T158]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   10.492052][  T158]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   10.492055][  T158]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   10.492058][  T158]  new_sync_write (fs/read_write.c:595)
[   10.492061][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.492064][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   10.492067][  T158]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.492069][  T158]  ? ksys_write (fs/read_write.c:739)
[   10.492075][  T158]  vfs_write (fs/read_write.c:687)
[   10.492080][  T158]  ksys_write (fs/read_write.c:739)
[   10.492083][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   10.492084][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.492087][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.492091][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.492093][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.492097][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.492099][  T158] RIP: 0033:0x7f953b02654e
[   10.492103][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   10.492105][  T158] RSP: 002b:00007fff91d9b5d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   10.492108][  T158] RAX: ffffffffffffffda RBX: 00007f953b1a7580 RCX: 00007f953b02654e
[   10.492110][  T158] RDX: 0000000000000002 RSI: 0000561a835820f0 RDI: 0000000000000001
[   10.492111][  T158] RBP: 00007fff91d9b5e0 R08: 0000000000000000 R09: 0000000000000000
[   10.492112][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
[   10.492113][  T158] R13: 0000000000000002 R14: 0000561a835820f0 R15: 0000000000000000
| [   16.593984][  T158] softirqs last disabled at (618805): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   16.593987][  T158] Preemption disabled at:
| [   16.593988][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   16.593998][  T158] Tainted: [W]=WARN
[   16.593999][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.594001][  T158] Call Trace:
[   16.594003][  T158]  <TASK>
[   16.594005][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.594010][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   16.594013][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.594017][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.594021][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   16.594025][  T158]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   16.594028][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.594033][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   16.594036][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.594040][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   16.594043][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.594046][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.594049][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.594058][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.594061][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.594062][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.594067][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.594069][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   16.594072][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.594075][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.594079][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.594083][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.594088][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.594090][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.594094][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.594099][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.594100][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.594106][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.594109][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.594111][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.594113][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   16.594117][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.594118][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.594122][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.594126][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.594129][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.594130][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.594132][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.594136][  T158]  _printk (kernel/printk/printk.c:2504)
[   16.594140][  T158]  ? snapshot_read.cold (user.c:?)
[   16.594143][  T158]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.594147][  T158]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   16.594150][  T158]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   16.594155][  T158]  unregister_console_locked.cold (kernel/printk/printk.c:4244 (discriminator 7))
[   16.594160][  T158]  ? console_suspend (kernel/printk/printk.c:114 (discriminator 1))
[   16.594166][  T158]  ? console_list_lock (./include/linux/lockdep.h:249 ./include/linux/srcu.h:184 ./include/linux/srcu.h:180 kernel/printk/printk.c:260)
[   16.594167][  T158]  unregister_console (kernel/printk/printk.c:4334)
[   16.594170][  T158] enabled_store (drivers/net/netconsole.c:975 drivers/net/netconsole.c:1089) netconsole
[   16.594172][  T158]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   16.594176][  T158]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   16.594178][  T158]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   16.594180][  T158]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:253 mm/slub.c:4683 mm/slub.c:4996 mm/slub.c:5559)
[   16.594183][  T158]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   16.594187][  T158]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   16.594189][  T158]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   16.594192][  T158]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   16.594195][  T158]  new_sync_write (fs/read_write.c:595)
[   16.594198][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.594201][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   16.594204][  T158]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.594206][  T158]  ? ksys_write (fs/read_write.c:739)
[   16.594213][  T158]  vfs_write (fs/read_write.c:687)
[   16.594218][  T158]  ksys_write (fs/read_write.c:739)
[   16.594221][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   16.594223][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.594225][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.594229][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.594232][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.594235][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.594238][  T158] RIP: 0033:0x7f953b02654e
[   16.594241][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   16.594244][  T158] RSP: 002b:00007fff91d9ab50 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   16.594247][  T158] RAX: ffffffffffffffda RBX: 00007f953b1a7580 RCX: 00007f953b02654e
[   16.594248][  T158] RDX: 0000000000000002 RSI: 0000561a835820f0 RDI: 0000000000000001
[   16.594249][  T158] RBP: 00007fff91d9ab60 R08: 0000000000000000 R09: 0000000000000000
[   16.594250][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002


Finger prints:
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars